[ [12] See chap. lxxxvii.
[ [13] It does not appear that this intention was ever carried into execution; but there are many chapters in this work on the subject of motion, where all that is necessary for a painter in this branch will be found.
[ [14] Anatomists have divided this muscle into four or five sections; but painters, following the ancient sculptors, shew only the three principal ones; and, in fact, we find that a greater number of them (as may often be observed in nature) gives a disagreeable meagreness to the subject. Beautiful nature does not shew more than three, though there may be more hid under the skin.
[ [15] A treatise on weights, like many others, intended by this author, but never published.
[ [16] See the next chapter.
[ [17] It is believed that this treatise, like many others promised by the author, was never written; and to save the necessity of frequently repeating this fact, the reader is here informed, once for all, that in the life of the author prefixed to this edition, will be found an account of the works promised or projected by him, and how far his intentions have been carried into effect.
[ [18] See chap. lxiv.
[ [19] See in this work from chap. lx. to lxxxi.
[ [20] See chapters lxi. lxiv.
[ [21] See chapters civ. cliv.